101531437063243 has 4 divisors (see below), whose sum is σ = 110761567705368. Its totient is φ = 92301306421120.

The previous prime is 101531437063207. The next prime is 101531437063247. The reversal of 101531437063243 is 342360734135101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101531437063243 - 2¹⁷ = 101531436932171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101531437063243.

It is not an unprimeable number, because it can be changed into a prime (101531437063247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4615065321046 + ... + 4615065321067.

It is an arithmetic number, because the mean of its divisors is an integer number (27690391926342).

Almost surely, 2^{101531437063243} is an apocalyptic number.

101531437063243 is a deficient number, since it is larger than the sum of its proper divisors (9230130642125).

101531437063243 is an equidigital number, since it uses as much as digits as its factorization.

101531437063243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9230130642124.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 101531437063243 in words is "one hundred one trillion, five hundred thirty-one billion, four hundred thirty-seven million, sixty-three thousand, two hundred forty-three".